hi

I have a string which contains some even no. of special characters    '?'

for example

 str="string contains ?special? character but how?to?  asjdjfjkdfjkd?check?"

i want to get substrings starts with ? and ends with ?

So in the above example my output should be

1.special

2,to

3.check

You can use a Regular Expression (System.Text.RegularExpressions.Regex) to extract this information. Have a look at the Regular Expression Library to get you started.

                                                string s="asjdjfjkdfjkd?check?";
			string[]value=(s.Split('?'));
			string monthaname=value[1];
			TextBox1.Text=value[1];

                                                 string myValue=value[1];

                    you can get the value in a Text box or you can get it to a specified variable

sanjayd:

 

                                                string s="asjdjfjkdfjkd?check?";
			string[]value=(s.Split('?'));
			string monthaname=value[1];
			TextBox1.Text=value[1];

                                                 string myValue=value[1];

                    you can get the value in a Text box or you can get it to a specified variable

 

The Split function won't work in this case - have a look at the user's expected output to see why. 

you post is confusing

str="string contains ?special? character but how?to?  asjdjfjkdfjkd?check?"

why ?

how can computer know which one is your starting and which one is your ending ? character.

sanjayd:

you post is confusing

Why is it confusing? The string contains characters that the user wants to use a delimiters. 

sanjayd:

how can computer know which one is your starting and which one is your ending ? character.

That's what a Regular Expression will be able to determine. It will find once instance of a character and use that as the start. When it finds the next instance of it it will use it as the end character and return the value in between. It can do this for every group of characters in a specified string.